Calculation of Cisco router processing power for a large network with thousands of nodes

Router processing power in VSAT networks is a serious problem due to the huge amount of packets transferring between satellite links and terrestrial links. In this paper, we model power of core routers which are using OSPF and EIGRP protocols. The model can accurately predict the power consumption of the routers with a significant speedup. Also we determine the total number of routers required to support thousands of servers in the mentioned network. Simulations done with NS2 in a wide range of network configurations to support the proposed model. Results obtained from the simulations are in agreement with those obtained by the model.